Airbags are used as a standard equipment of cars to strongly increase the safety of drivers and passengers on accidents. Recent developments include azide-free formulations and 'smart' airbag gas generators which enable a variable gas output. Guanidium azotetazolate (GZT) is investigated as a fuel and Cu(NO3).3Cu(OH)2 as an oxidizer and the resulting azide-free formulation produces a gas output of between 500 l/kg and 1000 l/kg. The use of V6Mo15O60, as a catalyst reduces the amount of harmful gases below accepted limits. Various grains were produced, ignited in closed vessels, and the burning rates measured. The investigations of a two-stage generator with igniter units consisting of two squibs and boosters showed a broad variety of pressure-times curves achievable by time delayed initiation. A simulation by a simplified model could even demonstrate the possibility to compensate the temperature dependency of the combustion by a delayed ignition. In static deployment and sled tests the prototype airbag module fulfilled the requirements.
Development of an environmental friendly dual stage gas generator within an european project
Entwicklung eines umweltfreundlichen zweistufigen Gasgenerators im Rahmen eines europäischen Projektes
12 Seiten, 9 Bilder, 16 Quellen
Conference paper
English
Development of an environmental friendly dual stage gas generator within an european project
Automotive engineering | 2000
|Development of an Environmental Friendly Dual Stage Gas Generator within an European Project
British Library Conference Proceedings | 2000
|SAE Technical Papers | 2013
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